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Re: [Qemu-devel] [PATCH v5 5/5] nvdimm acpi: add _CRS

From: Michael S. Tsirkin
Subject: Re: [Qemu-devel] [PATCH v5 5/5] nvdimm acpi: add _CRS
Date: Thu, 3 Mar 2016 16:48:55 +0200

On Thu, Mar 03, 2016 at 10:05:31PM +0800, Xiao Guangrong wrote:
> On 03/03/2016 09:29 PM, Michael S. Tsirkin wrote:
> >On Wed, Mar 02, 2016 at 07:50:41PM +0800, Xiao Guangrong wrote:
> >>As Igor suggested that we can report the BIOS patched operation region
> >>so that OSPM could see that particular range is in use and be able to
> >>notice conflicts if it happens some day
> >>
> >>Signed-off-by: Xiao Guangrong <address@hidden>
> >
> >This is reserved RAM, exposing it in _CRS makes no sense to me.
> As more and more memory will be reserved by BIOS/QEMU, report the
> information to OSPM and let it check the potential error is bad,
> no? :)

guest has enough info to detect conflicts if it wishes to.
IIUC _CRS is not intended for RAM, it's for MMIO
resources, if it works for RAM that's an accident.


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